HEADER STRUCTURAL PROTEIN 31-DEC-69 6C1G TITLE High-Resolution Cryo-EM Structures of Actin-bound Myosin States TITLE 2 Reveal the Mechanism of Myosin Force Sensing COMPND MOL_ID: 1; COMPND 2 MOLECULE: Unconventional myosin-Ib; COMPND 3 CHAIN: P; EXPDTA ELECTRON MICROSCOPY DBREF 6C1G P 6 728 UNP Q05096 MYO1B_RAT 6 728 SEQRES 1 P 39 PRO ARG THR LEU PHE GLN LEU GLU ASP LEU ARG LYS GLN SEQRES 2 P 39 ARG LEU GLU ASP LEU ALA THR LEU ILE GLN LYS ILE TYR SEQRES 3 P 39 ARG GLY TRP LYS CYS ARG THR HIS PHE LEU LEU MET LYS ATOM 1 N PRO P 690 178.743 261.808 238.501 1.00152.41 ATOM 2 CA PRO P 690 177.850 262.945 238.795 1.00152.41 ATOM 3 C PRO P 690 176.788 263.204 237.734 1.00152.41 ATOM 4 O PRO P 690 175.821 263.925 238.022 1.00152.41 ATOM 5 CB PRO P 690 178.820 264.128 238.914 1.00152.41 ATOM 6 CG PRO P 690 179.996 263.732 238.072 1.00152.41 ATOM 7 CD PRO P 690 180.121 262.241 238.203 1.00152.41 ATOM 8 N ARG P 691 176.925 262.619 236.536 1.00158.07 ATOM 9 CA ARG P 691 175.979 262.862 235.447 1.00158.07 ATOM 10 C ARG P 691 174.586 262.327 235.778 1.00158.07 ATOM 11 O ARG P 691 173.574 262.866 235.305 1.00158.07 ATOM 12 CB ARG P 691 176.515 262.242 234.153 1.00158.07 ATOM 13 CG ARG P 691 176.693 260.728 234.216 1.00158.07 ATOM 14 CD ARG P 691 177.261 260.128 232.948 1.00158.07 ATOM 15 NE ARG P 691 177.332 258.673 233.062 1.00158.07 ATOM 16 CZ ARG P 691 177.755 257.860 232.101 1.00158.07 ATOM 17 NH1 ARG P 691 178.154 258.354 230.937 1.00158.07 ATOM 18 NH2 ARG P 691 177.777 256.550 232.305 1.00158.07 ATOM 19 N THR P 692 174.517 261.280 236.609 1.00160.74 ATOM 20 CA THR P 692 173.237 260.805 237.118 1.00160.74 ATOM 21 C THR P 692 172.599 261.851 238.023 1.00160.74 ATOM 22 O THR P 692 171.388 262.088 237.951 1.00160.74 ATOM 23 CB THR P 692 173.441 259.480 237.858 1.00160.74 ATOM 24 OG1 THR P 692 174.039 258.528 236.969 1.00160.74 ATOM 25 CG2 THR P 692 172.120 258.919 238.359 1.00160.74 ATOM 26 N LEU P 693 173.415 262.525 238.841 1.00158.69 ATOM 27 CA LEU P 693 172.906 263.598 239.688 1.00158.69 ATOM 28 C LEU P 693 172.457 264.803 238.867 1.00158.69 ATOM 29 O LEU P 693 171.514 265.494 239.264 1.00158.69 ATOM 30 CB LEU P 693 173.963 264.008 240.717 1.00158.69 ATOM 31 CG LEU P 693 173.561 265.046 241.770 1.00158.69 ATOM 32 CD1 LEU P 693 172.456 264.510 242.666 1.00158.69 ATOM 33 CD2 LEU P 693 174.759 265.490 242.587 1.00158.69 ATOM 34 N PHE P 694 173.098 265.069 237.722 1.00159.06 ATOM 35 CA PHE P 694 172.575 266.108 236.834 1.00159.06 ATOM 36 C PHE P 694 171.226 265.704 236.240 1.00159.06 ATOM 37 O PHE P 694 170.279 266.508 236.214 1.00159.06 ATOM 38 CB PHE P 694 173.572 266.418 235.712 1.00159.06 ATOM 39 CG PHE P 694 174.826 267.119 236.173 1.00159.06 ATOM 40 CD1 PHE P 694 174.799 268.462 236.518 1.00159.06 ATOM 41 CD2 PHE P 694 176.042 266.451 236.203 1.00159.06 ATOM 42 CE1 PHE P 694 175.953 269.111 236.929 1.00159.06 ATOM 43 CE2 PHE P 694 177.199 267.093 236.612 1.00159.06 ATOM 44 CZ PHE P 694 177.155 268.424 236.973 1.00159.06 ATOM 45 N GLN P 695 171.113 264.446 235.792 1.00169.09 ATOM 46 CA GLN P 695 169.911 263.960 235.117 1.00169.09 ATOM 47 C GLN P 695 168.698 263.919 236.044 1.00169.09 ATOM 48 O GLN P 695 167.592 264.324 235.650 1.00169.09 ATOM 49 CB GLN P 695 170.182 262.568 234.543 1.00169.09 ATOM 50 CG GLN P 695 169.044 261.964 233.740 1.00169.09 ATOM 51 CD GLN P 695 169.401 260.595 233.195 1.00169.09 ATOM 52 OE1 GLN P 695 170.497 260.088 233.435 1.00169.09 ATOM 53 NE2 GLN P 695 168.473 259.984 232.467 1.00169.09 ATOM 54 N LEU P 696 168.897 263.445 237.278 1.00175.23 ATOM 55 CA LEU P 696 167.797 263.318 238.230 1.00175.23 ATOM 56 C LEU P 696 167.272 264.686 238.658 1.00175.23 ATOM 57 O LEU P 696 166.061 264.871 238.835 1.00175.23 ATOM 58 CB LEU P 696 168.254 262.506 239.444 1.00175.23 ATOM 59 CG LEU P 696 168.581 261.022 239.262 1.00175.23 ATOM 60 CD1 LEU P 696 169.139 260.444 240.550 1.00175.23 ATOM 61 CD2 LEU P 696 167.371 260.243 238.800 1.00175.23 ATOM 62 N GLU P 697 168.172 265.662 238.814 1.00174.77 ATOM 63 CA GLU P 697 167.746 267.022 239.136 1.00174.77 ATOM 64 C GLU P 697 167.047 267.681 237.956 1.00174.77 ATOM 65 O GLU P 697 166.182 268.545 238.150 1.00174.77 ATOM 66 CB GLU P 697 168.939 267.866 239.574 1.00174.77 ATOM 67 CG GLU P 697 169.550 267.458 240.893 1.00174.77 ATOM 68 CD GLU P 697 168.662 267.731 242.083 1.00174.77 ATOM 69 OE1 GLU P 697 167.859 268.684 242.026 1.00174.77 ATOM 70 OE2 GLU P 697 168.786 267.001 243.087 1.00174.77 ATOM 71 N ASP P 698 167.423 267.306 236.726 1.00181.53 ATOM 72 CA ASP P 698 166.691 267.790 235.556 1.00181.53 ATOM 73 C ASP P 698 165.257 267.265 235.551 1.00181.53 ATOM 74 O ASP P 698 164.302 268.033 235.339 1.00181.53 ATOM 75 CB ASP P 698 167.417 267.368 234.277 1.00181.53 ATOM 76 CG ASP P 698 166.926 268.111 233.039 1.00181.53 ATOM 77 OD1 ASP P 698 166.056 269.004 233.154 1.00181.53 ATOM 78 OD2 ASP P 698 167.414 267.792 231.935 1.00181.53 ATOM 79 N LEU P 699 165.091 265.962 235.802 1.00186.20 ATOM 80 CA LEU P 699 163.765 265.351 235.765 1.00186.20 ATOM 81 C LEU P 699 162.890 265.865 236.910 1.00186.20 ATOM 82 O LEU P 699 161.695 266.144 236.717 1.00186.20 ATOM 83 CB LEU P 699 163.913 263.829 235.804 1.00186.20 ATOM 84 CG LEU P 699 162.677 262.972 235.535 1.00186.20 ATOM 85 CD1 LEU P 699 162.144 263.202 234.142 1.00186.20 ATOM 86 CD2 LEU P 699 163.013 261.489 235.746 1.00186.20 ATOM 87 N ARG P 700 163.491 266.046 238.096 1.00185.83 ATOM 88 CA ARG P 700 162.808 266.682 239.223 1.00185.83 ATOM 89 C ARG P 700 162.406 268.115 238.894 1.00185.83 ATOM 90 O ARG P 700 161.313 268.567 239.267 1.00185.83 ATOM 91 N LYS P 701 163.276 268.833 238.171 1.00193.16 ATOM 92 CA LYS P 701 163.003 270.220 237.805 1.00193.16 ATOM 93 C LYS P 701 161.814 270.321 236.857 1.00193.16 ATOM 94 O LYS P 701 161.047 271.290 236.915 1.00193.16 ATOM 95 N GLN P 702 161.626 269.319 235.994 1.00203.20 ATOM 96 CA GLN P 702 160.419 269.318 235.169 1.00203.20 ATOM 97 C GLN P 702 159.176 268.897 235.955 1.00203.20 ATOM 98 O GLN P 702 158.068 269.408 235.695 1.00203.20 ATOM 99 N ARG P 703 159.336 267.992 236.932 1.00207.30 ATOM 100 CA ARG P 703 158.184 267.607 237.747 1.00207.30 ATOM 101 C ARG P 703 157.710 268.743 238.646 1.00207.30 ATOM 102 O ARG P 703 156.541 268.751 239.046 1.00207.30 ATOM 103 N LEU P 704 158.588 269.703 238.967 1.00209.72 ATOM 104 CA LEU P 704 158.145 270.924 239.643 1.00209.72 ATOM 105 C LEU P 704 157.158 271.712 238.785 1.00209.72 ATOM 106 O LEU P 704 156.168 272.255 239.297 1.00209.72 ATOM 107 N GLU P 705 157.416 271.778 237.474 1.00220.48 ATOM 108 CA GLU P 705 156.496 272.442 236.555 1.00220.48 ATOM 109 C GLU P 705 155.176 271.688 236.454 1.00220.48 ATOM 110 O GLU P 705 154.102 272.306 236.378 1.00220.48 ATOM 111 N ASP P 706 155.232 270.349 236.465 1.00226.14 ATOM 112 CA ASP P 706 153.986 269.579 236.464 1.00226.14 ATOM 113 C ASP P 706 153.195 269.777 237.759 1.00226.14 ATOM 114 O ASP P 706 151.954 269.777 237.744 1.00226.14 ATOM 115 N LEU P 707 153.891 269.965 238.885 1.00231.75 ATOM 116 CA LEU P 707 153.193 270.279 240.130 1.00231.75 ATOM 117 C LEU P 707 152.574 271.670 240.085 1.00231.75 ATOM 118 O LEU P 707 151.508 271.901 240.672 1.00231.75 ATOM 119 N ALA P 708 153.228 272.609 239.392 1.00241.18 ATOM 120 CA ALA P 708 152.641 273.934 239.224 1.00241.18 ATOM 121 C ALA P 708 151.374 273.876 238.380 1.00241.18 ATOM 122 O ALA P 708 150.394 274.568 238.681 1.00241.18 ATOM 123 N THR P 709 151.368 273.040 237.332 1.00247.04 ATOM 124 CA THR P 709 150.154 272.843 236.536 1.00247.04 ATOM 125 C THR P 709 149.035 272.222 237.372 1.00247.04 ATOM 126 O THR P 709 147.879 272.683 237.323 1.00247.04 ATOM 127 N LEU P 710 149.384 271.202 238.173 1.00252.22 ATOM 128 CA LEU P 710 148.430 270.531 239.057 1.00252.22 ATOM 129 C LEU P 710 147.834 271.489 240.083 1.00252.22 ATOM 130 O LEU P 710 146.671 271.341 240.476 1.00252.22 ATOM 131 N ILE P 711 148.609 272.482 240.522 1.00257.07 ATOM 132 CA ILE P 711 148.060 273.500 241.413 1.00257.07 ATOM 133 C ILE P 711 147.140 274.454 240.655 1.00257.07 ATOM 134 O ILE P 711 146.010 274.723 241.089 1.00257.07 ATOM 135 N GLN P 712 147.598 274.958 239.502 1.00263.96 ATOM 136 CA GLN P 712 146.931 276.090 238.859 1.00263.96 ATOM 137 C GLN P 712 145.586 275.696 238.255 1.00263.96 ATOM 138 O GLN P 712 144.665 276.523 238.182 1.00263.96 ATOM 139 N LYS P 713 145.440 274.433 237.832 1.00271.99 ATOM 140 CA LYS P 713 144.139 274.017 237.307 1.00271.99 ATOM 141 C LYS P 713 143.093 273.895 238.418 1.00271.99 ATOM 142 O LYS P 713 141.909 274.188 238.203 1.00271.99 ATOM 143 N ILE P 714 143.518 273.503 239.622 1.00280.16 ATOM 144 CA ILE P 714 142.586 273.368 240.737 1.00280.16 ATOM 145 C ILE P 714 142.269 274.739 241.325 1.00280.16 ATOM 146 O ILE P 714 141.160 274.980 241.820 1.00280.16 ATOM 147 N TYR P 715 143.222 275.671 241.248 1.00290.62 ATOM 148 CA TYR P 715 142.960 277.028 241.721 1.00290.62 ATOM 149 C TYR P 715 142.006 277.767 240.785 1.00290.62 ATOM 150 O TYR P 715 141.027 278.381 241.236 1.00290.62 ATOM 151 N ARG P 716 142.273 277.713 239.472 1.00294.81 ATOM 152 CA ARG P 716 141.402 278.399 238.519 1.00294.81 ATOM 153 C ARG P 716 140.034 277.731 238.426 1.00294.81 ATOM 154 O ARG P 716 139.009 278.423 238.351 1.00294.81 ATOM 155 N GLY P 717 139.992 276.398 238.463 1.00302.50 ATOM 156 CA GLY P 717 138.726 275.704 238.567 1.00302.50 ATOM 157 C GLY P 717 138.014 275.872 239.886 1.00302.50 ATOM 158 O GLY P 717 136.804 275.643 239.965 1.00302.50 ATOM 159 N TRP P 718 138.744 276.262 240.932 1.00306.24 ATOM 160 CA TRP P 718 138.108 276.629 242.190 1.00306.24 ATOM 161 C TRP P 718 137.495 278.020 242.110 1.00306.24 ATOM 162 O TRP P 718 136.469 278.281 242.749 1.00306.24 ATOM 163 N LYS P 719 138.107 278.923 241.336 1.00309.90 ATOM 164 CA LYS P 719 137.476 280.215 241.080 1.00309.90 ATOM 165 C LYS P 719 136.236 280.063 240.206 1.00309.90 ATOM 166 O LYS P 719 135.220 280.733 240.435 1.00309.90 ATOM 167 N CYS P 720 136.302 279.184 239.203 1.00317.42 ATOM 168 CA CYS P 720 135.135 278.927 238.365 1.00317.42 ATOM 169 C CYS P 720 134.058 278.170 239.136 1.00317.42 ATOM 170 O CYS P 720 132.861 278.332 238.867 1.00317.42 ATOM 171 N ARG P 721 134.467 277.343 240.102 1.00325.81 ATOM 172 CA ARG P 721 133.508 276.686 240.983 1.00325.81 ATOM 173 C ARG P 721 132.879 277.686 241.948 1.00325.81 ATOM 174 O ARG P 721 131.718 277.531 242.346 1.00325.81 ATOM 175 N THR P 722 133.627 278.728 242.322 1.00331.63 ATOM 176 CA THR P 722 133.065 279.789 243.153 1.00331.63 ATOM 177 C THR P 722 132.049 280.617 242.371 1.00331.63 ATOM 178 O THR P 722 130.964 280.931 242.882 1.00331.63 ATOM 179 N HIS P 723 132.377 280.958 241.120 1.00342.60 ATOM 180 CA HIS P 723 131.473 281.749 240.288 1.00342.60 ATOM 181 C HIS P 723 130.220 280.960 239.921 1.00342.60 ATOM 182 O HIS P 723 129.107 281.502 239.925 1.00342.60 ATOM 183 N PHE P 724 130.381 279.670 239.610 1.00348.74 ATOM 184 CA PHE P 724 129.224 278.830 239.313 1.00348.74 ATOM 185 C PHE P 724 128.437 278.517 240.581 1.00348.74 ATOM 186 O PHE P 724 127.237 278.225 240.527 1.00348.74 ATOM 187 N LEU P 725 129.101 278.569 241.737 1.00350.75 ATOM 188 CA LEU P 725 128.398 278.378 243.000 1.00350.75 ATOM 189 C LEU P 725 127.555 279.599 243.342 1.00350.75 ATOM 190 O LEU P 725 126.468 279.475 243.918 1.00350.75 ATOM 191 N LEU P 726 128.037 280.792 242.984 1.00355.63 ATOM 192 CA LEU P 726 127.258 282.002 243.231 1.00355.63 ATOM 193 C LEU P 726 126.113 282.130 242.233 1.00355.63 ATOM 194 O LEU P 726 124.977 282.441 242.610 1.00355.63 ATOM 195 N MET P 727 126.393 281.890 240.948 1.00359.82 ATOM 196 CA MET P 727 125.355 281.994 239.928 1.00359.82 ATOM 197 C MET P 727 124.366 280.835 239.983 1.00359.82 ATOM 198 O MET P 727 123.232 280.974 239.510 1.00359.82 ATOM 199 N LYS P 728 124.771 279.694 240.547 1.00362.38 ATOM 200 CA LYS P 728 123.877 278.542 240.632 1.00362.38 ATOM 201 C LYS P 728 122.783 278.765 241.668 1.00362.38 ATOM 202 O LYS P 728 121.626 278.381 241.455 1.00362.38 TER